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Número de pieza | EM78P803A | |
Descripción | 8-bit MCU | |
Fabricantes | ELAN Microelectronics | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de EM78P803A (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! EM78P803A
8-bit MCU
2005/8/12
Version 1.3.3
ELAN MICROELECTRONICS CORP.
No. 12, Innovation 1st RD., Science-Based Industrial Park
Hsin Chu City, Taiwan
TEL: (03) 5639977
FAX: (03) 5780617
1 page EM78P803A
8-bit Micro-controller
I. Main Feature
Single power supply
Operating voltage range: 2.8V ~ 5.5V(7.1652MHz)
4.5V ~ 5.5V(14.331MHz)
2.2V ~ 5.5V(3.5826MHz/ERIC mode)
2.2V ~ 5.5V(Sleep/Idle/Green mode)
CPU
8-bit RISC kernel
99.9% single instruction cycle commands
Clock
32.768KHz clock source
Built-in PLL to generate main clock 3.5826MHz x 0.5, 1, 2 and 4
Optional ERIC mode only with an external R
Timer and counter
Watch Dog: Programmable free running on chip watchdog timer
TCC: 8-bit real time clock/counter (TCC) with 8-bit prescaler
COUNTER1: 8-bit counter with 8-bit prescaler can be an interrupt source
COUNTER2: 8-bit counter can be an interrupt source
Both of counters have reload function.
Memory
8k x 13bits on chip Electrical One Time Programmable Read Only Memory (OTP-ROM)
0.5k x 8bits on-chip CID RAM
112 x 8bits common registers
I/O
Up to 28 bi-directional tri-state I/O ports (18 independent I/O)
IO with internal Pull high, wake-up and interrupt functions
Operation mode
Four modes can be selected. (Main clock is generated by internal PLL.)
Mode
Sleep mode
Idle mode
Green mode
Normal mode
CPU status
Turn off
Turn off
Turn on
Turn on
Main clock
Turn off
Turn off
Turn off
Turn on
32.768 kHz clock status
Turn off
Turn on
Turn on
Turn on
Interrupt
Selective signal sources and overflow interrupt
STACK: 8 levels stack for subroutine nesting
8 interrupt source, 5 external, 3 internal
Reset
Power on reset, /POVD reset (by PAD option) or external /RESET pin
Programmable Tone Generators
Programmable Tone1 and Tone2 generators
Independent single tone generation for Tone1 and Tone2
Mixed dual tone generation by Tone1 and Tone2 with 2dB difference
Can be programmed for DTMF tone generation
DED
Differential-input Energy Detector (DED) for line energy detection
LCD
LCD operation voltage chosen by software
Common driver pins: 8/4
Segment driver pins: 28
1/3 bias or 1/4 bias with output buffer
_________________________________________________________________________________________________________________________________________________________________
* This specification are subject to be changed without notice.
1 2005/8/12 V1.3.3
5 Page EM78P803A
8-bit Micro-controller
VI. Pin Descriptions
Pin
Power
VDD
VSS
Clock for MCU
XIN
XOUT
PLLC
I/O
POWER
GROUND
I
O
I
ERIC
I
LCD driver
COM0..COM7
SEG0..SEG15
SEG24..SEG27
SEG16..SEG19
O
O
O (PORT8)
SEG20..SEG23 O (PORT5)
DTMF
TONE
DED
TIP
O
I (PORT75)
RING
I (POTT74)
Test
TEST
Reset
/RESET
I/O
P54 ~P57
P60 ~P67
P70 ~P77
I
I
I/O PORT5
I/O PORT6
I/O PORT7
P80 ~ P83
P94 ~ P97
PAD Option
/POVD
ERICen
I/O PORT8
I/O PORT9
I
I
Description
Chip power VDD
Chip ground GND
Input pin for 32.768kHz crystal
Output pin for 32.768kHz crystal
Phase locked loop capacitor, connect a capacitor 0.01u to 0.047u
to the ground.
Connect to VDD with a resister serially when in ERIC mode. This
pin is shared with PLLC
Common driver pins of LCD drivers
Segment driver pins of LCD drivers
Segment driver pins of LCD drivers
Shared with P80 ~ P83
Segment driver pins of LCD drivers
Shared with P54 ~ P57
Programming tone generator output
Differential-input Energy Detector input pin. It is non-polarity pin
Shared with P75.
It can be used as positive input of low battery comparator.
Differential-input Energy Detector input pin. It is non-polarity pin
Shared with P74
It can be used as negative input of low battery comparator.
Test pin into test mode, normal low
Reset input. Low enable
PORT5 can be INPUT or OUTPUT port each bit
And P54 ~ P57 are shared with segment signal
PORT6 can be INPUT or OUTPUT port each bit
P66, P67 and P65 have open drain function
PORT7 can be INPUT or OUTPUT port each bit
PORT7 have internal pull high function
P70/INT0 ~ P73/INT3 can be interrupt signals
P75, P74 is shared with TIP and RING
PORT 8 can be INPUT or OUTPUT port each bit
And P80 ~ P83 are shared with segment signal.
PORT 9 can be INPUT or OUTPUT port each bit
P96, P97 have wake-up function.
Power on voltage detector reset
ERIC mode enable
Num
1
1
1
1
1
1
8
20
4
4
1
1
1
1
1
4
8
8
4
4
2
2
_________________________________________________________________________________________________________________________________________________________________
* This specification are subject to be changed without notice.
7 2005/8/12 V1.3.3
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet EM78P803A.PDF ] |
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